ACS Combines Spatial Awareness with High-Fidelity Sound

Hear your surroundings without affecting sound quality with the new ACS Ambient Series.

This article is Authorized by the In-Ear Monitor International Trade Organziation

This is a new announcement from one of our founding members. Our members are always pushing the boundaries of what is sonically possible for in-ear monitoring.


December 2, 2019


Typically, vented IEMs that try to offer increased spatial awareness do so at the expense of sound quality. It's a trade off. When you let in ambient noise, you loose bass response.

To counter this trade off, ACS has developed a dedicated patented ambient filter that lets you hear the external environment without compromising the audio quality. The new ACS Ambient Series combines a high-fidelity listening experience, soft silicone comfort and awareness of your immediate surroundings.

The patented ambient filter is available for the Emotion, Evolve, Engage, and Evoke2 in-ear monitors.


Reduction of the occlusion effect you get with a custom fit IEM.

The ability to hear your environment around you whether on stage, in the studio or even on the street.

Stay in communication with your fellow musicians and hear off-mic cues on stage.

Not feel isolated or removed from your performance environment.

Ear canal ventilation for reducing fatigue and providing greater comfort for longer.

Above all – a vented IEM that maintains 100% of the high-fidelity sound quality and low frequency response.


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